Violation of tightness of valves of fuel injectors is interfaced to difficulties at start of the hot engine. Damage of injectors can be at the bottom of emergence a diesel engine effect when the engine continues to work at the switched-off ignition.

Start the engine on single turns.

By means of a stethoscope make sure of serviceability of functioning of each separate injector, - existence of clicks indicates serviceability of opening and closing of valves.

In the absence of near at hand stethoscope check can be made to the touch by means of a screw-driver or a finger.

At identification of unusual sounds, no less than at total absence of those it is necessary to make sure of serviceability of giving on supply voltage injectors, to measure resistance of injectors and to check them on tightness.